Method for on-demand routing of mobile self-organizing network based on link quality

Abstract

The invention discloses a method for on-demand routing of a mobile self-organizing network based on link quality. The method aims at solving the problem that a most reliable route can not be found through the mobile self-organizing network on-demanding routing algorithm based on the number of shortest routes; the wireless link quality is converted into a route discovery priority and then is further converted into route discovery time delay; a source node and each intermediate node send a routing request message to each adjacent node according to time delay; when each node receives the routing request message for the first time, the routing request message is transmitted, and the routing request message received next time is directly abandoned, so that the phenomenon that a route with the optimal link state is chosen to be a routing path is guaranteed. According to the method, the optimal routing can be found in the mobile self-organizing network. In addition, on the basis of route discovery, the scheme of route state maintenance is added so that a failure node and an unstable link in the mobile self-organizing network can be found and update of the optimal routing can be achieved conveniently in real time.

Description

technical field [0001] The invention belongs to the technical field of network routing, and more specifically relates to an on-demand routing method for mobile ad hoc networks based on link quality. Background technique [0002] The mobile ad hoc network is a multi-hop wireless communication network that is composed of several mobile communication nodes without fixed settings and can be quickly established. Mobile ad hoc networks have the characteristics of dynamic changes in network topology, self-organizing without central nodes, and limited wireless transmission bandwidth. Due to the rapid change of the mobile ad hoc network topology, the limited channel bandwidth, and the high probability of network splitting temporarily, the commonly used routing algorithm based on the number of routes is difficult to apply to the mobile ad hoc network. To achieve reliable and stable wireless multi-hop routing must Research on dedicated routing protocols, the existing routing protocols...

AI Technical Summary

Problems solved by technology

The advantage of the on-demand routing protocol is that it does not need to periodically broadcast routing information, which saves limited network resources; the disadvantage is that when sending data packets, if there is no route to the destination node, the route discovery process must be started to find the route, so the data Grouping needs to wait for a certain time delay

In addition, since route discovery and route maintenance only exist when high-level applications demand it, such routing protocols generally can only perceive the local optimal link, but it is difficult to perceive the global optimal link.

Common on-demand routing protocols are generally based on distance vectors, but lack an on-demand routing protocol based on optimal link state

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